Pressed sheet metal hook and method of forming same



. g 1943' J. o. RICHARD 2,327,669.

PRESSED SHEET METAL HOOK AND METHOD OF FORMING SAME Filed Jan. 26, 1942 2 Sheets-Shet 1 I NV EN TOR.

JOSEPH O.R|CHARD ATTORNEYS Aug. 24; 1943.

S Mt w h G S N 12 M R O J. o. RICHARD FIG.6.

- FIG.9.

FIG.8.

INVENTOR. J H ORIQHARD Am ATTORNE OSEP BY W1 FIG],

Patented Aug. 24, 1943 'rorrics rnnssnn SHEET METAL HOOK-AND METHOD or FORMING SAME Joseph Richard, Detroit, Mich. Application January 26, 194:2,Serial No. 428,296

6 Claims.

The invention relates to hooks designed for various uses such, for instance, as on truck bodies for securing the lacings which hold a covering fabric over the load. f

It is an object of the invention to obtain a construction which can be formed from sheet metal or fiat metal bars, without waste.

It is a further object to obtain aconstruction in which the return bent hook portion is laterally offset from the securing portion so as to permit easily fastening the latter to the body to which it is secured.

Still further, it is an object to reinforce the return bend of the hook and to fashion the same to a cross section which avoids any cutting edges in contact with the lacing.

With these and other objects in view, the invention consists:

First, in the peculiar construction of the sheet metal hook; and

Second, in the method of forming the same, as hereinafter set forth.

In the drawings:

Fig. 1 is a front elevation of the hook;

Fig. 2 is a side elevation thereof;

Fig. 3 is, a cross section on line 3-3 of Fig. 2;

Fig. 4 is a plan view of the blank from which the hook is formed;

Fig. 5 illustrates the method and apparatus for offsetting a portion of the blank While maintained in the original plane thereof;

Fig. 6 is a cross section on line 66 of Fig. 5;

Fig. 7 illustrates the operation and apparatus for forming the return bend in the blank and simultaneously fashioning the cross sectional contour thereof;

Fig. 8 is a section on line 88 of Fig. 7; and

Fig. 9 illustrates the apparatus for further fashioning the cross sectional contour of the hook.

The blank from which the hook is formed may be out without waste from sheet metal or a straight flat bar of metal. As illustrated in Fig. 4, the securing portion A of the hook is of the full width of the bar and during the blanking operation has apertures B, B punched therein. The return bend portion C tapers from the portion A and is of lesser width so as to leave stock for the tapered end C of another blank. Thus, all of the stock is used without waste, the two ad- J'acent blanks being severed from each other along the line D.

The blanks thus formed are next fashioned This ma be accomplished by complementary grooved dies E, E, as illustrated in Figs. 5 and 6.

The next step is to form the return bend, the

center of which is substantially on line 6'$ of the offset blank. This operation is performed by a female dieG- and a cooperating male die' I-i, these being fashioned to a concavo-oonvex cross sectional contour, asillustrated at I in Fig. 8. The hook is thenplaced between dies J and K, which laterally contract the concavo-convex cross section to form a hollow reinforcing rib L. Finally, the free end portion M of the hook is pressed inwardto contract the opening which, however, has a slightly flaring portion.

A hook formed as above described may be easily secured to the body to which it is attached, inasmuch. as the apertures B, B for receiving the fastening bolts are offset from the return bent portion C. The cross section of this return bend is as shown in Fig. 3, the hollow reinforcing rib adding a high degree of rigidity to the hook. Also, as this rib extends inward with respect to the return bend, it forms a rounded bearing for engagement with the rope or lacing, thereby avoiding any cutting edge.

What I claim as my invention is:

1. A pressed sheet metal hook comprising a flat securing portion apertured for engagement of fasteners, and a tapering return bend portion laterally offset with respect to said securing portion not to obstruct the apertures therein, said return bend portion being of a concavo-convex cross sectional contour forming a hollow reinforcing rib extending around the bend and projecting radially inwardly thereof and the length of the return portion being nearly equalto that of the securing portion.

to laterally offset the portion 0 from the portion A While said portions are in the same plane.

2. A pressed sheet metal hook comprising a flat securing portion apertured for engagement with the fastening means, a tapering return bend portion laterally ofiset to one side of the apertures in said apertured portion to avoid obstructing the same and being of concave-convex cross sectional contour to form a reinforcing rib extending around the return bend, the length of the return portion being nearly equal to that of the securing portion. l

3. The method of forming pressedsheet metal hooks comprising cutting a flat strip having parallel edges along a generally oblique line to form thereof without waste similar complementary blanks, each having a substantially rectangular securing portion the full width of the strip and a portion extending therefrom of lesser width and tapering toward its outer end, bending each of said blanks in the plane thereof and in an intermediate sub-portion of said tapering portion to laterally offset an end sub-portion of said tapering portion from the securing portion, and forming a return bend in said intermediate subportion and also fashioning the cross sectional contour thereof concaVo-convex, thereby forming a hollow reinforcing rib extending around the bend.

4. The method offorming pressed sheet metal hooks comprising cutting a sheet metal blank with a substantially rectangular securing portion and a tapering portion extending from one end thereof and simultaneously forming fastener apertures in said securing portion, bending an intermediate sub-portion of said tapering portion of said blank in the plane thereof to laterally offset an end sub-portion ofsaid tapering portion from the rectangular securing portion so as to be at one side of the apertures therein, and forming- 5. The method of forming pressed sheet metal ok mpr n cu ting a s t ta blan w h a ub t nt ally tet an a e ur n p rtion d a aper n po QIl x di gv m one end. thereof and simultaneously forming fastener apertures therein, bending an intermediate subportion of said tapering portion of said blank in the plane thereof to laterally offset an end subportion of said tapering portion so as to beat one side of the apertures therein from thesecuring portion, forming a return bend in said tapering portion with an outwardly flaring free end portion and also fashioning the cross sectional contour free end, the latter being outwardly flared.

6 The method of forming pressed sheet metal hooks comprising forming a sheet metal blank with a substantially rectangular securing portion and a tapering portion extending from one end thereof, placing said blank in dies which hold it in its plane, relatively moving said dies to bend an intermediate sub-portion of said-tapering por- JOSEPH. Q- RICH D-f 

